[mpls-linux-general] bug: mpls/tc and mpls/netfilter, the same problem ?

[Vincent J. <ja...@en...>]

Hi,

I can see the following problem that could explain why MPLS/tc and 
MPLS/netfilter do not work for me:

1/ 
in sch_ingress.c:
...
  sch_ingress.c:  skb->mpls_index = res.classid;
...
I could check that skb->mpls_index = res.classid = 0x0x40005006 
but in ip_output, skb->mpls_index remains always to 0x0.

2/
When I was doing another test, I could see the same problem with netfilter:
in ipt_MPLS.c, the skb's mpls_index is set to 0x40005006, 
ipt_MPLS.c:
...
        if((*pskb)->mpls_index != mplsinfo->index) {
                (*pskb)->mpls_index = mplsinfo->index; <- It is set properly.
                (*pskb)->nfcache |= NFC_ALTERED;
        }
...
But in ip_output, skb->mpls_index remains always to 0x0 ;-(


Then the skb is not processed by mpls_output in ip_output, but it is 
processed by the regular ip_output. The datagram is not labeled and is not 
sent in the LSP.

Who would have an idea in order to get the right skb->mpls_index in ip_output 
?

Vincent